Hoist.



PATENTED DEC. 11, 1906.

B. F. HENRY.

HOIST.

APPLICATION FILED K0122. 1904.

INVENTOR' W E SE? ax. w mwm n4: mum's PETERS co. wasumorou, n. c.

PATENTED DEC. 11, 1906.

B. F. HENRY.

HOIST. APPLICATION FILED NOV.'22. 1904.

2 SHEETSSHBET 2.

WZraagaa v .Berzjamzixzi'iierzr ms nomus FEfERS c BENJAMIN F. HENRY, OF SAN PEDRO, CALIFORNIA.

HolsT.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed November 22,1904. Serial N0.233.880.

To all whom it may concern.-

Be it known that I, BENJAMIN F. HENRY, a citizen of the United States, residing at San Pedro, in the county of Los Angeles and State of California, have invented new and useful Improvements in Hoists, of which the following is a specification.

My invention relates more particularly to means by which articles are elevated from one point and carriedto another as, for example, in cases where it is desirable to elevate commodities from the hold of a vessel and transfer them onto a wharf or onto a car standing thereon-or it may be used in any situation where substances are to be moved and may be permanently attached to a building and used as a fire-escape in case of fire; and the objects of my invention are to provide handy and reliable means whereby the block carrying the tackle designed to be se-- cured to the article to be moved can be lowered or elevated at will and can be moved in a horizontal plane to the right or left at will. I accomplish these objects by means of the device described herein and shown in the accompanying drawings, in which- Figure 1 is a side elevation of a hoist embodying my invention aflixed to the end of a wharf. Fig. 2 is an enlarged detail of the fragment of the supportingtimber upon which the mast of the hoist is mounted and showing in fragment the threaded shaft B. Fig. 3 is a diagrammatic view illustrating the manner in which the pulleys in the various blocks are disposed and in which the ropes extend around these blocks. Fig. 4 is a perspective view of the front of a building with my improved hoist secured thereto for use in case of a fire. Fig. 5 is a diagrammatic view illustrating the manner in which the pulleys are arranged and the manner in which the ropes run over the pulleys in the form of my device shown in Fig. 4.

In the drawings, A A represent a couple of stringers lying longitudinally of the wharf and resting in slots at a formed longitudinally of the wharf or pier. Extending downwardly from these longitudinal stringers are a number of hangers A, which have screw-threaded o enings therethrough for the reception of tffreaded shafts B, lying beneath and parallel with the stringers. ()n the outer ends of these shafts B are keyed sprocket-wheels C, which wheels are connected by the sprocketchain D, and, by the means of the crank E, connected with one of the shafts, both threaded shafts B may be rotated in unison to cause the stringers A and A upon which the hoist is mounted, to move longitudinally along the wharf. By this means the hoist can be arranged for operation at any desired point along the wharf F. I have shown in Fig. 1 the ends of rails G. of the railroad-track along which cars can be moved for the purpose of loading. The stringer or base A supports a diagonally or obliquely extending standard 20, designed to carry at or near its upper end the block N and the pulley or sheave 21, the standard projecting or leaning away from the opposite stringer A The stringerA is apertured to receive the pintle 22 of a mast WV, which mast has secured thereto in any suitable manner a boom K, projecting preferably horizontally, out from the mast and in a direction opposite to that in which the standard 20 leans. The boom is supported and strengthened by means of a brace 23, also carried by the mast W, the upper end of the brace engaging the boom near its outer end. From this construction it will be seen that the mast and boom are capable of rotation relative to the stringer, the end of the boom adapted to extend some distance over the end or side of the wharf and having secured thereto one end of a track rope or cable I, the opposite end of which passes over an idle pulley2l and thence to a suitable Windlass J, which normally retains the cable I taut, but also admits of a slackening or loosening of the cable to permit the trolley block or carriage H to be lowered for repairs or removal. The boom K instead of projecting directly opposite to the direction in which the standard leans forms a very broad obtuse angle therewith, the standard and mast being opposite each other, so that the cables may pass freely between the ends of the boom and the standard without engaging the mast, as such frictional engagement would cause wear and prevent the free operation of my hoist, and since the mast is pivotally mounted the strain on the cable I would tend to rotate the mast and slacken the cable, to revent which I secure to the outer end of tiie boom one end of a stay-rope 24, the opposite end (not shown) being suitably secured to oppose the rotative tendency of the mast and retain the boom in its proper position.

Suspended over the Wharf I have shown my hoist, which consists of, first, a trolley block or carriage H, carried by or upon a supporting rope or track I, the two track-wheels 1 and 2 of the block resting thereon. This rope is fastened at one end to the revoluble drum J and made fast at the other end to the boom K, as at 7c. This rope forms a support on and along which the trolley-block moves and forms means by which to swing the end of the boom K around when desired. Securely affixed in an eye L in this block is the rope M, which extends thence down and around the center pulley 3 (see Fig. 3) in the triple-pulley block N, thence to and around the pulley 4 in the trolley-block, thence down to and around. hoisting-sheave 5 in the double-pulley block 0, thence up to and around the pulley 6 in the trolleyblock, thence to the left around and over the pulley 7 in the triple block N, thence down to and around the drum P, to which it is affixed. The rope Q is secured in an eye R in the trolley-block and passes therefrom to the right and over the pulley 8 in the double block S, thence around and over the pulley 9 in the trolley-block, thence down under and around the pulley 10 in the block 0, thence upwardly and over the hoisting-sheave 1 1 in the trolley-block, thence over and around the pulley 12 in the double block S, thence to the left and over the idle pulley 13 in the trolley block or carriage H, thence over the pulley 1 1 in the block N, thence down to and around the drum T, to which it is aflixed. Thus it w ll be seen that the double block 0, to which the chain U is attached, which chain at its free end carries the hookV, is supported by the ropes M and Q.

Now when it is desired to operate my hoist, it being in the position shown in Fig. 1, the drums P and T are turned to the left. This will cause the block H and O to move to the right and beyond the wharf, putting the tackle-hook V in position above the commodities in the hold of the vessel which it is desired to unload. Now in order to lower the tackle-hook in position for engagement with the commodity to be elevated the two drums T and P are rotated, T to the right and P to the left. This will cause the tackle to decend to the desired elevation for securing thereto the commodity to be moved. Now afterthe hoist has been secured to the commodity to be moved the drum T is turned to the left and the drum P to the right. This will elevate the tackle and the attached load. Now to carry it to the left over the position where it is desired to deposit the commodity operated on the drums P and T are turned to the right, causing the blocks II and O to move to the left to the desired position, when the tackle is again lowered, as hereinbefore explained, and the commodity detached therefrom. Thus it will be seen that by means of the block and tackle herein shown yond nently secured at and described I have provided means to raise and lower at will the hook V, or I can move the same to the right or left along a horizontal plane, and by means of the screw-threaded shafts B, I am enabled to move my hoist longitudinally along the wharf by the means hereinbefore explained.

In Fig. 1 I have shown the post WV beyond the block and operatingropes. These ropes and the block can be carried around and bethe post when desired by swinging the boom K around to the right, carrying therewith the double block S, secured on the end thereof. The post W is rotatably mounted on the stringer A as shown, for that purpose.

In Fig. 4 I have shown my hoist affixed to the front of a building to be used as a fireescape, a cage Y being secured thereto by the hook V and adapted to carry one or more persons. The cage is' adapted to pass along in front of the windows of the building, as shown in said figure, the same being operated by means of stationary cranks at either corner of the building in the manner hereinbefore described. The supporting-rope I, upon which the main pulley is supported, is permaboth ends to the brackets X, which are secured at the top of and on the front of the building. It will also be observed that in th s form the idler 13'and the pulley 14 are dispensed with.

In Fig. 5 I have shown a diagrammatic view of the ropes and pulleys as used in my hoist adapted for placement upon the front of a building, as shown in Fig. 1, for use as a fireescape.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A hoist comprising a plurality of supporting members, hangers de ending therefrom, threaded shafts engage by the hangers, means connecting the shafts, means for operating one of said shafts, a trolley-block suitably suspended between the members, a hoisting-block carried by the trolley-block, and means for moving the trolley-block from and toward each supporting member and for raising and lowering the hoisting-block.

2. The combination With a suitable bed having slots formed therein, of threaded shafts located in the slots, stringers, means carried by the stringers and engaging the shafts, supporting members carried by the .stringers, a trolley-block suitably suspended between the members, a hoisting-block carried by the trolley-block and means for moving the trolley-block from and toward each supporting member. and for raising and lowermg the hoisting-block. v

3. A hoist comprising supporting members diverging from each other, one of the members being pivotally mounted, means for preventing the rotation of said member, a trolley-block suitably suspended between the members, a hoisting-block carried by the trolley-block and means for moving the trolley-block from and toward each supporting member and for raising and lowering the hoisting-block.

4. A hoist comprising a plurality of supporting members, one of said members consisting of a pivotally-mounted mast, a boom carried thereby, connecting means extending between the boom and the o posite member, a guy-rope connected to the 00m to prevent the rotation thereof, a trolley-block suitably suspended between the members, a hoistingblock carried by the trolley-block and means for moving the trolley-block from and toward each supporting member and for raising and lowering the hoistingblock.

5. A hoist comprising an inclined supporting member, a mast located opposite the member, a boom carried by the mast and projecting at an obtuse angle to the vertical plane of the mast and supporting member, a trolley-block suitably suspended between the members, a hoisting-block carried by the trolley-block and means for moving the trolley-block from and toward each supporting member and for raising and lowering the hoisting-block.

6. The combination in a hoist, of a suitably-supported trolley block or carriage, hoisting-sheaves mounted in the trolleyblock, sheaves mounted on opposite sides of the trolley-block, flexible means secured to the trolley-block, the means passing around the last-named sheaves and thence back over the hoisting-sheaves, and a load-sustaining i block suspended beneath the trolley-block by the flexible means.

7. The combinationwith suitable supports, of sheaves carried by the supports, asuitablysupported trolley-block located between the supports, a guide sheave and hoistingsheaves mounted in the block, a load-sustaining block, flexible connections secured to' opposite sides of the trolley-block, thence extending in opposite directions from each other and passing over sheaves on the supports, thence over hoisting-sheaves on the respective sides of the trolley-block, thence down to and aroundsheaves carried by the load-sustaining block to suspend the latter beneath the trolleyblock, thence up and around the remaining hoisting-sheaves on the block and beneath the guide-sheave, thence in opposite directions to the sheaves on the opposite and respective supports, a winding-drum to which one of the flexible connections extends from the sheave, on the support, the remaining flexible connection passing through the trolley-block and over the guide-sheave, thence over a sheave on the opposite support and a winding-drum to which the remaining flexible connection is secured.

In witness that I claim the foregoing I have hereunto subscribed my name this 10th day of September, 1904.

BENJAMIN F. HENRY.

Witnesses:

HENRY T. HAZARD, G. E. HARPHAM. 

